Autonomous system
AS2506 SUPERCSI NTT WEST CHUGOKU CORPORATION
Unclassified ARIN
Summary
NTT West (Chugoku)
isp residential eyeball legacy
SUPERCSI is a network of NTT West's Chugoku regional operation, part of the NTT West telecommunications group serving western Japan.
What it's used for
- Regional broadband internet access for homes and businesses in the Chugoku region.
Notable
- An eyeball access network (consumer/business subscribers) rather than a hosting or transit provider. The low AS number reflects an early Japanese-internet allocation from the NTT era.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 14 prefixes · 214K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 15 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS2506- Registry name
- SuperCSI
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2002-04-05
- Last changed
- 2026-01-09
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- NTT WEST CHUGOKU CORPORATION
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
- Website
- https://jpnic.rdap.apnic.net/autnum/2506
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 63% valid · 10 valid, 6 with no ROA
- ROAs
- 1 authorising AS2506
- ASPA
- no ASPA record
- IRR
- 100% registered · 16 of 16 announcements
- Route objects
- 12 naming AS2506
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,771 prefixes, as published 2026-10-15. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere